aboutsummaryrefslogtreecommitdiff
path: root/gdb/remote-vx.c
blob: 1d723f884f9be00a2ee8a53849a778bd6989d3e4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
/* Memory-access and commands for remote VxWorks processes, for GDB.

   Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1997, 1998, 1999,
   2000, 2001, 2002 Free Software Foundation, Inc.

   Contributed by Wind River Systems and Cygnus Support.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include "defs.h"
#include "frame.h"
#include "inferior.h"
#include "target.h"
#include "gdbcore.h"
#include "command.h"
#include "symtab.h"
#include "complaints.h"
#include "gdbcmd.h"
#include "bfd.h"		/* Required by objfiles.h.  */
#include "symfile.h"
#include "objfiles.h"
#include "gdb-stabs.h"
#include "regcache.h"

#include "gdb_string.h"
#include <errno.h>
#include <signal.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/socket.h>
#define malloc bogon_malloc	/* Sun claims "char *malloc()" not void * */
#define free bogon_free		/* Sun claims "int free()" not void */
#define realloc bogon_realloc	/* Sun claims "char *realloc()", not void * */
#include <rpc/rpc.h>
#undef malloc
#undef free
#undef realloc
#include <sys/time.h>		/* UTek's <rpc/rpc.h> doesn't #incl this */
#include <netdb.h>
#include "vx-share/ptrace.h"
#include "vx-share/xdr_ptrace.h"
#include "vx-share/xdr_ld.h"
#include "vx-share/xdr_rdb.h"
#include "vx-share/dbgRpcLib.h"

#include <symtab.h>

/* Maximum number of bytes to transfer in a single
   PTRACE_{READ,WRITE}DATA request.  */
#define VX_MEMXFER_MAX 4096

extern void vx_read_register ();
extern void vx_write_register ();
extern void symbol_file_command ();
extern enum stop_kind stop_soon_quietly;	/* for wait_for_inferior */

static int net_step ();
static int net_ptrace_clnt_call ();	/* Forward decl */
static enum clnt_stat net_clnt_call ();		/* Forward decl */

/* Target ops structure for accessing memory and such over the net */

static struct target_ops vx_ops;

/* Target ops structure for accessing VxWorks child processes over the net */

static struct target_ops vx_run_ops;

/* Saved name of target host and called function for "info files".
   Both malloc'd.  */

static char *vx_host;
static char *vx_running;	/* Called function */

/* Nonzero means target that is being debugged remotely has a floating
   point processor.  */

int target_has_fp;

/* Default error message when the network is forking up.  */

static const char rpcerr[] = "network target debugging:  rpc error";

CLIENT *pClient;		/* client used in net debugging */
static int ptraceSock = RPC_ANYSOCK;

enum clnt_stat net_clnt_call ();
static void parse_args ();

static struct timeval rpcTimeout =
{10, 0};

static char *skip_white_space ();
static char *find_white_space ();

/* Tell the VxWorks target system to download a file.
   The load addresses of the text, data, and bss segments are
   stored in *pTextAddr, *pDataAddr, and *pBssAddr (respectively).
   Returns 0 for success, -1 for failure.  */

static int
net_load (char *filename, CORE_ADDR *pTextAddr, CORE_ADDR *pDataAddr,
	  CORE_ADDR *pBssAddr)
{
  enum clnt_stat status;
  struct ldfile ldstruct;
  struct timeval load_timeout;

  memset ((char *) &ldstruct, '\0', sizeof (ldstruct));

  /* We invoke clnt_call () here directly, instead of through
     net_clnt_call (), because we need to set a large timeout value.
     The load on the target side can take quite a while, easily
     more than 10 seconds.  The user can kill this call by typing
     CTRL-C if there really is a problem with the load.  

     Do not change the tv_sec value without checking -- select() imposes
     a limit of 10**8 on it for no good reason that I can see...  */

  load_timeout.tv_sec = 99999999;	/* A large number, effectively inf. */
  load_timeout.tv_usec = 0;

  status = clnt_call (pClient, VX_LOAD, xdr_wrapstring, &filename, xdr_ldfile,
		      &ldstruct, load_timeout);

  if (status == RPC_SUCCESS)
    {
      if (*ldstruct.name == 0)	/* load failed on VxWorks side */
	return -1;
      *pTextAddr = ldstruct.txt_addr;
      *pDataAddr = ldstruct.data_addr;
      *pBssAddr = ldstruct.bss_addr;
      return 0;
    }
  else
    return -1;
}

/* returns 0 if successful, errno if RPC failed or VxWorks complains. */

static int
net_break (int addr, u_long procnum)
{
  enum clnt_stat status;
  int break_status;
  Rptrace ptrace_in;		/* XXX This is stupid.  It doesn't need to be a ptrace
				   structure.  How about something smaller? */

  memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
  break_status = 0;

  ptrace_in.addr = addr;
  ptrace_in.pid = PIDGET (inferior_ptid);

  status = net_clnt_call (procnum, xdr_rptrace, &ptrace_in, xdr_int,
			  &break_status);

  if (status != RPC_SUCCESS)
    return errno;

  if (break_status == -1)
    return ENOMEM;
  return break_status;		/* probably (FIXME) zero */
}

/* returns 0 if successful, errno otherwise */

static int
vx_insert_breakpoint (int addr)
{
  return net_break (addr, VX_BREAK_ADD);
}

/* returns 0 if successful, errno otherwise */

static int
vx_remove_breakpoint (int addr)
{
  return net_break (addr, VX_BREAK_DELETE);
}

/* Start an inferior process and sets inferior_ptid to its pid.
   EXEC_FILE is the file to run.
   ALLARGS is a string containing the arguments to the program.
   ENV is the environment vector to pass.
   Returns process id.  Errors reported with error().
   On VxWorks, we ignore exec_file.  */

static void
vx_create_inferior (char *exec_file, char *args, char **env)
{
  enum clnt_stat status;
  arg_array passArgs;
  TASK_START taskStart;

  memset ((char *) &passArgs, '\0', sizeof (passArgs));
  memset ((char *) &taskStart, '\0', sizeof (taskStart));

  /* parse arguments, put them in passArgs */

  parse_args (args, &passArgs);

  if (passArgs.arg_array_len == 0)
    error ("You must specify a function name to run, and arguments if any");

  status = net_clnt_call (PROCESS_START, xdr_arg_array, &passArgs,
			  xdr_TASK_START, &taskStart);

  if ((status != RPC_SUCCESS) || (taskStart.status == -1))
    error ("Can't create process on remote target machine");

  /* Save the name of the running function */
  vx_running = savestring (passArgs.arg_array_val[0],
			   strlen (passArgs.arg_array_val[0]));

  push_target (&vx_run_ops);
  inferior_ptid = pid_to_ptid (taskStart.pid);

  /* We will get a trace trap after one instruction.
     Insert breakpoints and continue.  */

  init_wait_for_inferior ();

  /* Set up the "saved terminal modes" of the inferior
     based on what modes we are starting it with.  */
  target_terminal_init ();

  /* Install inferior's terminal modes.  */
  target_terminal_inferior ();

  stop_soon_quietly = STOP_QUIETLY;
  wait_for_inferior ();		/* Get the task spawn event */
  stop_soon_quietly = NO_STOP_QUIETLY;

  /* insert_step_breakpoint ();  FIXME, do we need this?  */
  proceed (-1, TARGET_SIGNAL_DEFAULT, 0);
}

/* Fill ARGSTRUCT in argc/argv form with the arguments from the
   argument string ARGSTRING.  */

static void
parse_args (register char *arg_string, arg_array *arg_struct)
{
  register int arg_count = 0;	/* number of arguments */
  register int arg_index = 0;
  register char *p0;

  memset ((char *) arg_struct, '\0', sizeof (arg_array));

  /* first count how many arguments there are */

  p0 = arg_string;
  while (*p0 != '\0')
    {
      if (*(p0 = skip_white_space (p0)) == '\0')
	break;
      p0 = find_white_space (p0);
      arg_count++;
    }

  arg_struct->arg_array_len = arg_count;
  arg_struct->arg_array_val = (char **) xmalloc ((arg_count + 1)
						 * sizeof (char *));

  /* now copy argument strings into arg_struct.  */

  while (*(arg_string = skip_white_space (arg_string)))
    {
      p0 = find_white_space (arg_string);
      arg_struct->arg_array_val[arg_index++] = savestring (arg_string,
							   p0 - arg_string);
      arg_string = p0;
    }

  arg_struct->arg_array_val[arg_count] = NULL;
}

/* Advance a string pointer across whitespace and return a pointer
   to the first non-white character.  */

static char *
skip_white_space (register char *p)
{
  while (*p == ' ' || *p == '\t')
    p++;
  return p;
}

/* Search for the first unquoted whitespace character in a string.
   Returns a pointer to the character, or to the null terminator
   if no whitespace is found.  */

static char *
find_white_space (register char *p)
{
  register int c;

  while ((c = *p) != ' ' && c != '\t' && c)
    {
      if (c == '\'' || c == '"')
	{
	  while (*++p != c && *p)
	    {
	      if (*p == '\\')
		p++;
	    }
	  if (!*p)
	    break;
	}
      p++;
    }
  return p;
}

/* Poll the VxWorks target system for an event related
   to the debugged task.
   Returns -1 if remote wait failed, task status otherwise.  */

static int
net_wait (RDB_EVENT *pEvent)
{
  int pid;
  enum clnt_stat status;

  memset ((char *) pEvent, '\0', sizeof (RDB_EVENT));

  pid = PIDGET (inferior_ptid);
  status = net_clnt_call (PROCESS_WAIT, xdr_int, &pid, xdr_RDB_EVENT,
			  pEvent);

  /* return (status == RPC_SUCCESS)? pEvent->status: -1; */
  if (status == RPC_SUCCESS)
    return ((pEvent->status) ? 1 : 0);
  else if (status == RPC_TIMEDOUT)
    return (1);
  else
    return (-1);
}

/* Suspend the remote task.
   Returns -1 if suspend fails on target system, 0 otherwise.  */

static int
net_quit (void)
{
  int pid;
  int quit_status;
  enum clnt_stat status;

  quit_status = 0;

  /* don't let rdbTask suspend itself by passing a pid of 0 */

  if ((pid = PIDGET (inferior_ptid)) == 0)
    return -1;

  status = net_clnt_call (VX_TASK_SUSPEND, xdr_int, &pid, xdr_int,
			  &quit_status);

  return (status == RPC_SUCCESS) ? quit_status : -1;
}

/* Read a register or registers from the remote system.  */

void
net_read_registers (char *reg_buf, int len, u_long procnum)
{
  int status;
  Rptrace ptrace_in;
  Ptrace_return ptrace_out;
  C_bytes out_data;
  char message[100];

  memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
  memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));

  /* Initialize RPC input argument structure.  */

  ptrace_in.pid = PIDGET (inferior_ptid);
  ptrace_in.info.ttype = NOINFO;

  /* Initialize RPC return value structure.  */

  out_data.bytes = reg_buf;
  out_data.len = len;
  ptrace_out.info.more_data = (caddr_t) & out_data;

  /* Call RPC; take an error exit if appropriate.  */

  status = net_ptrace_clnt_call (procnum, &ptrace_in, &ptrace_out);
  if (status)
    error (rpcerr);
  if (ptrace_out.status == -1)
    {
      errno = ptrace_out.errno_num;
      sprintf (message, "reading %s registers", (procnum == PTRACE_GETREGS)
	       ? "general-purpose"
	       : "floating-point");
      perror_with_name (message);
    }
}

/* Write register values to a VxWorks target.  REG_BUF points to a buffer
   containing the raw register values, LEN is the length of REG_BUF in
   bytes, and PROCNUM is the RPC procedure number (PTRACE_SETREGS or
   PTRACE_SETFPREGS).  An error exit is taken if the RPC call fails or
   if an error status is returned by the remote debug server.  This is
   a utility routine used by vx_write_register ().  */

void
net_write_registers (char *reg_buf, int len, u_long procnum)
{
  int status;
  Rptrace ptrace_in;
  Ptrace_return ptrace_out;
  C_bytes in_data;
  char message[100];

  memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
  memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));

  /* Initialize RPC input argument structure.  */

  in_data.bytes = reg_buf;
  in_data.len = len;

  ptrace_in.pid = PIDGET (inferior_ptid);
  ptrace_in.info.ttype = DATA;
  ptrace_in.info.more_data = (caddr_t) & in_data;

  /* Call RPC; take an error exit if appropriate.  */

  status = net_ptrace_clnt_call (procnum, &ptrace_in, &ptrace_out);
  if (status)
    error (rpcerr);
  if (ptrace_out.status == -1)
    {
      errno = ptrace_out.errno_num;
      sprintf (message, "writing %s registers", (procnum == PTRACE_SETREGS)
	       ? "general-purpose"
	       : "floating-point");
      perror_with_name (message);
    }
}

/* Prepare to store registers.  Since we will store all of them,
   read out their current values now.  */

static void
vx_prepare_to_store (void)
{
  /* Fetch all registers, if any of them are not yet fetched.  */
  deprecated_read_register_bytes (0, NULL, REGISTER_BYTES);
}

/* Copy LEN bytes to or from remote inferior's memory starting at MEMADDR
   to debugger memory starting at MYADDR.  WRITE is true if writing to the
   inferior.  TARGET is unused.
   Result is the number of bytes written or read (zero if error).  The
   protocol allows us to return a negative count, indicating that we can't
   handle the current address but can handle one N bytes further, but
   vxworks doesn't give us that information.  */

static int
vx_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
		struct mem_attrib *attrib, struct target_ops *target)
{
  int status;
  Rptrace ptrace_in;
  Ptrace_return ptrace_out;
  C_bytes data;
  enum ptracereq request;
  int nleft, nxfer;

  memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
  memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));

  ptrace_in.pid = PIDGET (inferior_ptid); /* XXX pid unnecessary for READDATA */
  ptrace_in.addr = (int) memaddr;	/* Where from */
  ptrace_in.data = len;		/* How many bytes */

  if (write)
    {
      ptrace_in.info.ttype = DATA;
      ptrace_in.info.more_data = (caddr_t) & data;

      data.bytes = (caddr_t) myaddr;	/* Where from */
      data.len = len;		/* How many bytes (again, for XDR) */
      request = PTRACE_WRITEDATA;
    }
  else
    {
      ptrace_out.info.more_data = (caddr_t) & data;
      request = PTRACE_READDATA;
    }
  /* Loop until the entire request has been satisfied, transferring
     at most VX_MEMXFER_MAX bytes per iteration.  Break from the loop
     if an error status is returned by the remote debug server.  */

  nleft = len;
  status = 0;

  while (nleft > 0 && status == 0)
    {
      nxfer = min (nleft, VX_MEMXFER_MAX);

      ptrace_in.addr = (int) memaddr;
      ptrace_in.data = nxfer;
      data.bytes = (caddr_t) myaddr;
      data.len = nxfer;

      /* Request a block from the remote debug server; if RPC fails,
         report an error and return to debugger command level.  */

      if (net_ptrace_clnt_call (request, &ptrace_in, &ptrace_out))
	error (rpcerr);

      status = ptrace_out.status;
      if (status == 0)
	{
	  memaddr += nxfer;
	  myaddr += nxfer;
	  nleft -= nxfer;
	}
      else
	{
	  /* A target-side error has ocurred.  Set errno to the error
	     code chosen by the target so that a later perror () will
	     say something meaningful.  */

	  errno = ptrace_out.errno_num;
	}
    }

  /* Return the number of bytes transferred.  */

  return (len - nleft);
}

static void
vx_files_info (void)
{
  printf_unfiltered ("\tAttached to host `%s'", vx_host);
  printf_unfiltered (", which has %sfloating point", target_has_fp ? "" : "no ");
  printf_unfiltered (".\n");
}

static void
vx_run_files_info (void)
{
  printf_unfiltered ("\tRunning %s VxWorks process %s",
		     vx_running ? "child" : "attached",
		     local_hex_string (PIDGET (inferior_ptid)));
  if (vx_running)
    printf_unfiltered (", function `%s'", vx_running);
  printf_unfiltered (".\n");
}

static void
vx_resume (ptid_t ptid, int step, enum target_signal siggnal)
{
  int status;
  Rptrace ptrace_in;
  Ptrace_return ptrace_out;
  CORE_ADDR cont_addr;

  if (ptid_equal (ptid, minus_one_ptid))
    ptid = inferior_ptid;

  if (siggnal != 0 && siggnal != stop_signal)
    error ("Cannot send signals to VxWorks processes");

  /* Set CONT_ADDR to the address at which we are continuing,
     or to 1 if we are continuing from where the program stopped.
     This conforms to traditional ptrace () usage, but at the same
     time has special meaning for the VxWorks remote debug server.
     If the address is not 1, the server knows that the target
     program is jumping to a new address, which requires special
     handling if there is a breakpoint at the new address.  */

  cont_addr = read_register (PC_REGNUM);
  if (cont_addr == stop_pc)
    cont_addr = 1;

  memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
  memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));

  ptrace_in.pid = PIDGET (ptid);
  ptrace_in.addr = cont_addr;	/* Target side insists on this, or it panics.  */

  if (step)
    status = net_step ();
  else
    status = net_ptrace_clnt_call (PTRACE_CONT, &ptrace_in, &ptrace_out);

  if (status)
    error (rpcerr);
  if (ptrace_out.status == -1)
    {
      errno = ptrace_out.errno_num;
      perror_with_name ("Resuming remote process");
    }
}

static void
vx_mourn_inferior (void)
{
  pop_target ();		/* Pop back to no-child state */
  generic_mourn_inferior ();
}


static void vx_add_symbols (char *, int, CORE_ADDR, CORE_ADDR, CORE_ADDR);

struct find_sect_args
  {
    CORE_ADDR text_start;
    CORE_ADDR data_start;
    CORE_ADDR bss_start;
  };

static void find_sect (bfd *, asection *, void *);

static void
find_sect (bfd *abfd, asection *sect, void *obj)
{
  struct find_sect_args *args = (struct find_sect_args *) obj;

  if (bfd_get_section_flags (abfd, sect) & (SEC_CODE & SEC_READONLY))
    args->text_start = bfd_get_section_vma (abfd, sect);
  else if (bfd_get_section_flags (abfd, sect) & SEC_ALLOC)
    {
      if (bfd_get_section_flags (abfd, sect) & SEC_LOAD)
	{
	  /* Exclude .ctor and .dtor sections which have SEC_CODE set but not
	     SEC_DATA.  */
	  if (bfd_get_section_flags (abfd, sect) & SEC_DATA)
	    args->data_start = bfd_get_section_vma (abfd, sect);
	}
      else
	args->bss_start = bfd_get_section_vma (abfd, sect);
    }
}

static void
vx_add_symbols (char *name, int from_tty, CORE_ADDR text_addr,
		CORE_ADDR data_addr, CORE_ADDR bss_addr)
{
  struct section_offsets *offs;
  struct objfile *objfile;
  struct find_sect_args ss;

  /* It might be nice to suppress the breakpoint_re_set which happens here
     because we are going to do one again after the objfile_relocate.  */
  objfile = symbol_file_add (name, from_tty, NULL, 0, 0);

  /* This is a (slightly cheesy) way of superceding the old symbols.  A less
     cheesy way would be to find the objfile with the same name and
     free_objfile it.  */
  objfile_to_front (objfile);

  offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
  memcpy (offs, objfile->section_offsets, SIZEOF_SECTION_OFFSETS);

  ss.text_start = 0;
  ss.data_start = 0;
  ss.bss_start = 0;
  bfd_map_over_sections (objfile->obfd, find_sect, &ss);

  /* Both COFF and b.out frontends use these SECT_OFF_* values.  */
  offs->offsets[SECT_OFF_TEXT (objfile)]  = text_addr - ss.text_start;
  offs->offsets[SECT_OFF_DATA (objfile)] = data_addr - ss.data_start;
  offs->offsets[SECT_OFF_BSS (objfile)] = bss_addr - ss.bss_start;
  objfile_relocate (objfile, offs);
}

/* This function allows the addition of incrementally linked object files.  */

static void
vx_load_command (char *arg_string, int from_tty)
{
  CORE_ADDR text_addr;
  CORE_ADDR data_addr;
  CORE_ADDR bss_addr;

  if (arg_string == 0)
    error ("The load command takes a file name");

  arg_string = tilde_expand (arg_string);
  make_cleanup (xfree, arg_string);

  dont_repeat ();

  /* Refuse to load the module if a debugged task is running.  Doing so
     can have a number of unpleasant consequences to the running task.  */

  if (PIDGET (inferior_ptid) != 0 && target_has_execution)
    {
      if (query ("You may not load a module while the target task is running.\n\
Kill the target task? "))
	target_kill ();
      else
	error ("Load canceled.");
    }

  QUIT;
  immediate_quit++;
  if (net_load (arg_string, &text_addr, &data_addr, &bss_addr) == -1)
    error ("Load failed on target machine");
  immediate_quit--;

  vx_add_symbols (arg_string, from_tty, text_addr, data_addr, bss_addr);

  /* Getting new symbols may change our opinion about what is
     frameless.  */
  reinit_frame_cache ();
}

/* Single step the target program at the source or machine level.
   Takes an error exit if rpc fails.
   Returns -1 if remote single-step operation fails, else 0.  */

static int
net_step (void)
{
  enum clnt_stat status;
  int step_status;
  SOURCE_STEP source_step;

  source_step.taskId = PIDGET (inferior_ptid);

  if (step_range_end)
    {
      source_step.startAddr = step_range_start;
      source_step.endAddr = step_range_end;
    }
  else
    {
      source_step.startAddr = 0;
      source_step.endAddr = 0;
    }

  status = net_clnt_call (VX_SOURCE_STEP, xdr_SOURCE_STEP, &source_step,
			  xdr_int, &step_status);

  if (status == RPC_SUCCESS)
    return step_status;
  else
    error (rpcerr);
}

/* Emulate ptrace using RPC calls to the VxWorks target system.
   Returns nonzero (-1) if RPC status to VxWorks is bad, 0 otherwise.  */

static int
net_ptrace_clnt_call (enum ptracereq request, Rptrace *pPtraceIn,
		      Ptrace_return *pPtraceOut)
{
  enum clnt_stat status;

  status = net_clnt_call (request, xdr_rptrace, pPtraceIn, xdr_ptrace_return,
			  pPtraceOut);

  if (status != RPC_SUCCESS)
    return -1;

  return 0;
}

/* Query the target for the name of the file from which VxWorks was
   booted.  pBootFile is the address of a pointer to the buffer to
   receive the file name; if the pointer pointed to by pBootFile is 
   NULL, memory for the buffer will be allocated by XDR.
   Returns -1 if rpc failed, 0 otherwise.  */

static int
net_get_boot_file (char **pBootFile)
{
  enum clnt_stat status;

  status = net_clnt_call (VX_BOOT_FILE_INQ, xdr_void, (char *) 0,
			  xdr_wrapstring, pBootFile);
  return (status == RPC_SUCCESS) ? 0 : -1;
}

/* Fetch a list of loaded object modules from the VxWorks target
   and store in PLOADTABLE.
   Returns -1 if rpc failed, 0 otherwise
   There's no way to check if the returned loadTable is correct.
   VxWorks doesn't check it.  */

static int
net_get_symbols (ldtabl *pLoadTable)
{
  enum clnt_stat status;

  memset ((char *) pLoadTable, '\0', sizeof (struct ldtabl));

  status = net_clnt_call (VX_STATE_INQ, xdr_void, 0, xdr_ldtabl, pLoadTable);
  return (status == RPC_SUCCESS) ? 0 : -1;
}

/* Look up a symbol in the VxWorks target's symbol table.
   Returns status of symbol read on target side (0=success, -1=fail)
   Returns -1 and complain()s if rpc fails.  */

static int
vx_lookup_symbol (char *name,	/* symbol name */
		  CORE_ADDR *pAddr)
{
  enum clnt_stat status;
  SYMBOL_ADDR symbolAddr;

  *pAddr = 0;
  memset ((char *) &symbolAddr, '\0', sizeof (symbolAddr));

  status = net_clnt_call (VX_SYMBOL_INQ, xdr_wrapstring, &name,
			  xdr_SYMBOL_ADDR, &symbolAddr);
  if (status != RPC_SUCCESS)
    {
      complaint (&symfile_complaints, "Lost contact with VxWorks target");
      return -1;
    }

  *pAddr = symbolAddr.addr;
  return symbolAddr.status;
}

/* Check to see if the VxWorks target has a floating point coprocessor.
   Returns 1 if target has floating point processor, 0 otherwise.
   Calls error() if rpc fails.  */

static int
net_check_for_fp (void)
{
  enum clnt_stat status;
  bool_t fp = 0;		/* true if fp processor is present on target board */

  status = net_clnt_call (VX_FP_INQUIRE, xdr_void, 0, xdr_bool, &fp);
  if (status != RPC_SUCCESS)
    error (rpcerr);

  return (int) fp;
}

/* Establish an RPC connection with the VxWorks target system.
   Calls error () if unable to establish connection.  */

static void
net_connect (char *host)
{
  struct sockaddr_in destAddr;
  struct hostent *destHost;
  unsigned long addr;

  /* Get the internet address for the given host.  Allow a numeric
     IP address or a hostname.  */

  addr = inet_addr (host);
  if (addr == -1)
    {
      destHost = (struct hostent *) gethostbyname (host);
      if (destHost == NULL)
	/* FIXME: Probably should include hostname here in quotes.
	   For example if the user types "target vxworks vx960 " it should
	   say "Invalid host `vx960 '." not just "Invalid hostname".  */
	error ("Invalid hostname.  Couldn't find remote host address.");
      addr = *(unsigned long *) destHost->h_addr;
    }

  memset (&destAddr, '\0', sizeof (destAddr));

  destAddr.sin_addr.s_addr = addr;
  destAddr.sin_family = AF_INET;
  destAddr.sin_port = 0;	/* set to actual port that remote
				   ptrace is listening on.  */

  /* Create a tcp client transport on which to issue
     calls to the remote ptrace server.  */

  ptraceSock = RPC_ANYSOCK;
  pClient = clnttcp_create (&destAddr, RDBPROG, RDBVERS, &ptraceSock, 0, 0);
  /* FIXME, here is where we deal with different version numbers of the
     proto */

  if (pClient == NULL)
    {
      clnt_pcreateerror ("\tnet_connect");
      error ("Couldn't connect to remote target.");
    }
}

/* Sleep for the specified number of milliseconds 
 * (assumed to be less than 1000).
 * If select () is interrupted, returns immediately;
 * takes an error exit if select () fails for some other reason.
 */

static void
sleep_ms (long ms)
{
  struct timeval select_timeout;
  int status;

  select_timeout.tv_sec = 0;
  select_timeout.tv_usec = ms * 1000;

  status = select (0, (fd_set *) 0, (fd_set *) 0, (fd_set *) 0,
		   &select_timeout);

  if (status < 0 && errno != EINTR)
    perror_with_name ("select");
}

static ptid_t
vx_wait (ptid_t ptid_to_wait_for, struct target_waitstatus *status)
{
  register int pid;
  RDB_EVENT rdbEvent;
  int quit_failed;

  do
    {
      /* If CTRL-C is hit during this loop,
         suspend the inferior process.  */

      quit_failed = 0;
      if (quit_flag)
	{
	  quit_failed = (net_quit () == -1);
	  quit_flag = 0;
	}

      /* If a net_quit () or net_wait () call has failed,
         allow the user to break the connection with the target.
         We can't simply error () out of this loop, since the 
         data structures representing the state of the inferior
         are in an inconsistent state.  */

      if (quit_failed || net_wait (&rdbEvent) == -1)
	{
	  terminal_ours ();
	  if (query ("Can't %s.  Disconnect from target system? ",
		     (quit_failed) ? "suspend remote task"
		     : "get status of remote task"))
	    {
	      target_mourn_inferior ();
	      error ("Use the \"target\" command to reconnect.");
	    }
	  else
	    {
	      terminal_inferior ();
	      continue;
	    }
	}

      pid = rdbEvent.taskId;
      if (pid == 0)
	{
	  sleep_ms (200);	/* FIXME Don't kill the network too badly */
	}
      else if (pid != PIDGET (inferior_ptid))
	internal_error (__FILE__, __LINE__,
			"Bad pid for debugged task: %s\n",
			local_hex_string ((unsigned long) pid));
    }
  while (pid == 0);

  /* The mostly likely kind.  */
  status->kind = TARGET_WAITKIND_STOPPED;

  switch (rdbEvent.eventType)
    {
    case EVENT_EXIT:
      status->kind = TARGET_WAITKIND_EXITED;
      /* FIXME is it possible to distinguish between a
         normal vs abnormal exit in VxWorks? */
      status->value.integer = 0;
      break;

    case EVENT_START:
      /* Task was just started. */
      status->value.sig = TARGET_SIGNAL_TRAP;
      break;

    case EVENT_STOP:
      status->value.sig = TARGET_SIGNAL_TRAP;
      /* XXX was it stopped by a signal?  act accordingly */
      break;

    case EVENT_BREAK:		/* Breakpoint was hit. */
      status->value.sig = TARGET_SIGNAL_TRAP;
      break;

    case EVENT_SUSPEND:	/* Task was suspended, probably by ^C. */
      status->value.sig = TARGET_SIGNAL_INT;
      break;

    case EVENT_BUS_ERR:	/* Task made evil nasty reference. */
      status->value.sig = TARGET_SIGNAL_BUS;
      break;

    case EVENT_ZERO_DIV:	/* Division by zero */
      status->value.sig = TARGET_SIGNAL_FPE;
      break;

    case EVENT_SIGNAL:
#ifdef I80960
      status->value.sig = i960_fault_to_signal (rdbEvent.sigType);
#else
      /* Back in the old days, before enum target_signal, this code used
         to add NSIG to the signal number and claim that PRINT_RANDOM_SIGNAL
         would take care of it.  But PRINT_RANDOM_SIGNAL has never been
         defined except on the i960, so I don't really know what we are
         supposed to do on other architectures.  */
      status->value.sig = TARGET_SIGNAL_UNKNOWN;
#endif
      break;
    }				/* switch */
  return pid_to_ptid (pid);
}

static int
symbol_stub (char *arg)
{
  symbol_file_add_main (arg, 0);
  return 1;
}

static int
add_symbol_stub (char *arg)
{
  struct ldfile *pLoadFile = (struct ldfile *) arg;

  printf_unfiltered ("\t%s: ", pLoadFile->name);
  vx_add_symbols (pLoadFile->name, 0, pLoadFile->txt_addr,
		  pLoadFile->data_addr, pLoadFile->bss_addr);
  printf_unfiltered ("ok\n");
  return 1;
}
/* Target command for VxWorks target systems.

   Used in vxgdb.  Takes the name of a remote target machine
   running vxWorks and connects to it to initialize remote network
   debugging.  */

static void
vx_open (char *args, int from_tty)
{
  extern int close ();
  char *bootFile;
  extern char *source_path;
  struct ldtabl loadTable;
  struct ldfile *pLoadFile;
  int i;
  extern CLIENT *pClient;
  int symbols_added = 0;

  if (!args)
    error_no_arg ("target machine name");

  target_preopen (from_tty);

  unpush_target (&vx_ops);
  printf_unfiltered ("Attaching remote machine across net...\n");
  gdb_flush (gdb_stdout);

  /* Allow the user to kill the connect attempt by typing ^C.
     Wait until the call to target_has_fp () completes before
     disallowing an immediate quit, since even if net_connect ()
     is successful, the remote debug server might be hung.  */

  immediate_quit++;

  net_connect (args);
  target_has_fp = net_check_for_fp ();
  printf_filtered ("Connected to %s.\n", args);

  immediate_quit--;

  push_target (&vx_ops);

  /* Save a copy of the target host's name.  */
  vx_host = savestring (args, strlen (args));

  /* Find out the name of the file from which the target was booted
     and load its symbol table.  */

  printf_filtered ("Looking in Unix path for all loaded modules:\n");
  bootFile = NULL;
  if (!net_get_boot_file (&bootFile))
    {
      if (*bootFile)
	{
	  printf_filtered ("\t%s: ", bootFile);
	  /* This assumes that the kernel is never relocated.  Hope that is an
	     accurate assumption.  */
	  if (catch_errors
	      (symbol_stub,
	       bootFile,
	       "Error while reading symbols from boot file:\n",
	       RETURN_MASK_ALL))
	    puts_filtered ("ok\n");
	}
      else if (from_tty)
	printf_unfiltered ("VxWorks kernel symbols not loaded.\n");
    }
  else
    error ("Can't retrieve boot file name from target machine.");

  clnt_freeres (pClient, xdr_wrapstring, &bootFile);

  if (net_get_symbols (&loadTable) != 0)
    error ("Can't read loaded modules from target machine");

  i = 0 - 1;
  while (++i < loadTable.tbl_size)
    {
      QUIT;			/* FIXME, avoids clnt_freeres below:  mem leak */
      pLoadFile = &loadTable.tbl_ent[i];
#ifdef WRS_ORIG
      {
	register int desc;
	struct cleanup *old_chain;
	char *fullname = NULL;

	desc = openp (source_path, 0, pLoadFile->name, O_RDONLY, 0, &fullname);
	if (desc < 0)
	  perror_with_name (pLoadFile->name);
	old_chain = make_cleanup (close, desc);
	add_file_at_addr (fullname, desc, pLoadFile->txt_addr, pLoadFile->data_addr,
			  pLoadFile->bss_addr);
	do_cleanups (old_chain);
      }
#else
      /* FIXME: Is there something better to search than the PATH? (probably
         not the source path, since source might be in different directories
         than objects.  */

      if (catch_errors (add_symbol_stub, (char *) pLoadFile, (char *) 0,
			RETURN_MASK_ALL))
	symbols_added = 1;
#endif
    }
  printf_filtered ("Done.\n");

  clnt_freeres (pClient, xdr_ldtabl, &loadTable);

  /* Getting new symbols may change our opinion about what is
     frameless.  */
  if (symbols_added)
    reinit_frame_cache ();
}

/* Takes a task started up outside of gdb and ``attaches'' to it.
   This stops it cold in its tracks and allows us to start tracing it.  */

static void
vx_attach (char *args, int from_tty)
{
  unsigned long pid;
  char *cptr = 0;
  Rptrace ptrace_in;
  Ptrace_return ptrace_out;
  int status;

  if (!args)
    error_no_arg ("process-id to attach");

  pid = strtoul (args, &cptr, 0);
  if ((cptr == args) || (*cptr != '\0'))
    error ("Invalid process-id -- give a single number in decimal or 0xhex");

  if (from_tty)
    printf_unfiltered ("Attaching pid %s.\n",
		       local_hex_string ((unsigned long) pid));

  memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
  memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));
  ptrace_in.pid = pid;

  status = net_ptrace_clnt_call (PTRACE_ATTACH, &ptrace_in, &ptrace_out);
  if (status == -1)
    error (rpcerr);
  if (ptrace_out.status == -1)
    {
      errno = ptrace_out.errno_num;
      perror_with_name ("Attaching remote process");
    }

  /* It worked... */

  inferior_ptid = pid_to_ptid (pid);
  push_target (&vx_run_ops);

  if (vx_running)
    xfree (vx_running);
  vx_running = 0;
}

/* detach_command --
   takes a program previously attached to and detaches it.
   The program resumes execution and will no longer stop
   on signals, etc.  We better not have left any breakpoints
   in the program or it'll die when it hits one.  For this
   to work, it may be necessary for the process to have been
   previously attached.  It *might* work if the program was
   started via the normal ptrace (PTRACE_TRACEME).  */

static void
vx_detach (char *args, int from_tty)
{
  Rptrace ptrace_in;
  Ptrace_return ptrace_out;
  int signal = 0;
  int status;

  if (args)
    error ("Argument given to VxWorks \"detach\".");

  if (from_tty)
    printf_unfiltered ("Detaching pid %s.\n",
		       local_hex_string (
		         (unsigned long) PIDGET (inferior_ptid)));

  if (args)			/* FIXME, should be possible to leave suspended */
    signal = atoi (args);

  memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
  memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));
  ptrace_in.pid = PIDGET (inferior_ptid);

  status = net_ptrace_clnt_call (PTRACE_DETACH, &ptrace_in, &ptrace_out);
  if (status == -1)
    error (rpcerr);
  if (ptrace_out.status == -1)
    {
      errno = ptrace_out.errno_num;
      perror_with_name ("Detaching VxWorks process");
    }

  inferior_ptid = null_ptid;
  pop_target ();		/* go back to non-executing VxWorks connection */
}

/* vx_kill -- takes a running task and wipes it out.  */

static void
vx_kill (void)
{
  Rptrace ptrace_in;
  Ptrace_return ptrace_out;
  int status;

  printf_unfiltered ("Killing pid %s.\n", local_hex_string ((unsigned long) PIDGET (inferior_ptid)));

  memset ((char *) &ptrace_in, '\0', sizeof (ptrace_in));
  memset ((char *) &ptrace_out, '\0', sizeof (ptrace_out));
  ptrace_in.pid = PIDGET (inferior_ptid);

  status = net_ptrace_clnt_call (PTRACE_KILL, &ptrace_in, &ptrace_out);
  if (status == -1)
    warning (rpcerr);
  else if (ptrace_out.status == -1)
    {
      errno = ptrace_out.errno_num;
      perror_with_name ("Killing VxWorks process");
    }

  /* If it gives good status, the process is *gone*, no events remain.
     If the kill failed, assume the process is gone anyhow.  */
  inferior_ptid = null_ptid;
  pop_target ();		/* go back to non-executing VxWorks connection */
}

/* Clean up from the VxWorks process target as it goes away.  */

static void
vx_proc_close (int quitting)
{
  inferior_ptid = null_ptid;	/* No longer have a process.  */
  if (vx_running)
    xfree (vx_running);
  vx_running = 0;
}

/* Make an RPC call to the VxWorks target.
   Returns RPC status.  */

static enum clnt_stat
net_clnt_call (enum ptracereq procNum, xdrproc_t inProc, char *in,
	       xdrproc_t outProc, char *out)
{
  enum clnt_stat status;

  status = clnt_call (pClient, procNum, inProc, in, outProc, out, rpcTimeout);

  if (status != RPC_SUCCESS)
    clnt_perrno (status);

  return status;
}

/* Clean up before losing control.  */

static void
vx_close (int quitting)
{
  if (pClient)
    clnt_destroy (pClient);	/* The net connection */
  pClient = 0;

  if (vx_host)
    xfree (vx_host);		/* The hostname */
  vx_host = 0;
}

/* A vxprocess target should be started via "run" not "target".  */
/*ARGSUSED */
static void
vx_proc_open (char *name, int from_tty)
{
  error ("Use the \"run\" command to start a VxWorks process.");
}

static void
init_vx_ops (void)
{
  vx_ops.to_shortname = "vxworks";
  vx_ops.to_longname = "VxWorks target memory via RPC over TCP/IP";
  vx_ops.to_doc = "Use VxWorks target memory.  \n\
Specify the name of the machine to connect to.";
  vx_ops.to_open = vx_open;
  vx_ops.to_close = vx_close;
  vx_ops.to_attach = vx_attach;
  vx_ops.to_xfer_memory = vx_xfer_memory;
  vx_ops.to_files_info = vx_files_info;
  vx_ops.to_load = vx_load_command;
  vx_ops.to_lookup_symbol = vx_lookup_symbol;
  vx_ops.to_create_inferior = vx_create_inferior;
  vx_ops.to_stratum = core_stratum;
  vx_ops.to_has_all_memory = 1;
  vx_ops.to_has_memory = 1;
  vx_ops.to_magic = OPS_MAGIC;	/* Always the last thing */
};

static void
init_vx_run_ops (void)
{
  vx_run_ops.to_shortname = "vxprocess";
  vx_run_ops.to_longname = "VxWorks process";
  vx_run_ops.to_doc = "VxWorks process; started by the \"run\" command.";
  vx_run_ops.to_open = vx_proc_open;
  vx_run_ops.to_close = vx_proc_close;
  vx_run_ops.to_detach = vx_detach;
  vx_run_ops.to_resume = vx_resume;
  vx_run_ops.to_wait = vx_wait;
  vx_run_ops.to_fetch_registers = vx_read_register;
  vx_run_ops.to_store_registers = vx_write_register;
  vx_run_ops.to_prepare_to_store = vx_prepare_to_store;
  vx_run_ops.to_xfer_memory = vx_xfer_memory;
  vx_run_ops.to_files_info = vx_run_files_info;
  vx_run_ops.to_insert_breakpoint = vx_insert_breakpoint;
  vx_run_ops.to_remove_breakpoint = vx_remove_breakpoint;
  vx_run_ops.to_kill = vx_kill;
  vx_run_ops.to_load = vx_load_command;
  vx_run_ops.to_lookup_symbol = vx_lookup_symbol;
  vx_run_ops.to_mourn_inferior = vx_mourn_inferior;
  vx_run_ops.to_stratum = process_stratum;
  vx_run_ops.to_has_memory = 1;
  vx_run_ops.to_has_stack = 1;
  vx_run_ops.to_has_registers = 1;
  vx_run_ops.to_has_execution = 1;
  vx_run_ops.to_magic = OPS_MAGIC;
}

void
_initialize_vx (void)
{
  init_vx_ops ();
  add_target (&vx_ops);
  init_vx_run_ops ();
  add_target (&vx_run_ops);

  add_show_from_set
    (add_set_cmd ("vxworks-timeout", class_support, var_uinteger,
		  (char *) &rpcTimeout.tv_sec,
		  "Set seconds to wait for rpc calls to return.\n\
Set the number of seconds to wait for rpc calls to return.", &setlist),
     &showlist);
}